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/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.camera.stress;

import com.android.camera.VideoCamera;
import java.io.BufferedWriter;
import java.io.FileWriter;

import android.app.Instrumentation;
import android.content.Intent;
import android.test.ActivityInstrumentationTestCase2;
import android.test.suitebuilder.annotation.LargeTest;
import android.util.Log;

/**
 * Junit / Instrumentation test case for camera test
 *
 * Running the test suite:
 *
 * adb shell am instrument \
 *    -e class com.android.camera.stress.SwitchPreview \
 *    -w com.google.android.camera.tests/com.android.camera.CameraStressTestRunner
 *
 */
public class SwitchPreview extends ActivityInstrumentationTestCase2 <VideoCamera>{
    private String TAG = "SwitchPreview";
    private static final int TOTAL_NUMBER_OF_SWITCHING = 200;
    private static final long WAIT_FOR_PREVIEW = 4000;

    private static final String CAMERA_TEST_OUTPUT_FILE = "/sdcard/mediaStressOut.txt";
    private BufferedWriter mOut;
    private FileWriter mfstream;

    public SwitchPreview() {
        super("com.google.android.camera", VideoCamera.class);
    }

    @Override
    protected void setUp() throws Exception {
        getActivity();
        prepareOutputFile();
        super.setUp();
    }

    @Override
    protected void tearDown() throws Exception {
        getActivity().finish();
        closeOutputFile();
        super.tearDown();
    }

    private void prepareOutputFile(){
        try{
            mfstream = new FileWriter(CAMERA_TEST_OUTPUT_FILE, true);
            mOut = new BufferedWriter(mfstream);
        } catch (Exception e){
            assertTrue("Camera Switch Mode",false);
        }
    }

    private void closeOutputFile() {
        try {
            mOut.write("\n");
            mOut.close();
            mfstream.close();
        } catch (Exception e) {
            assertTrue("CameraSwitchMode close output", false);
        }
    }

    @LargeTest
    public void testSwitchMode() {
        //Switching the video and the video recorder mode
        Instrumentation inst = getInstrumentation();
        try{
            mOut.write("Camera Switch Mode:\n");
            mOut.write("No of loops :" + TOTAL_NUMBER_OF_SWITCHING + "\n");
            mOut.write("loop: ");
            for (int i=0; i< TOTAL_NUMBER_OF_SWITCHING; i++) {
                Thread.sleep(WAIT_FOR_PREVIEW);
                Intent intent = new Intent();
                intent.setClassName("com.google.android.camera",
                        "com.android.camera.VideoCamera");
                getActivity().startActivity(intent);
                Thread.sleep(WAIT_FOR_PREVIEW);
                intent.setClassName("com.google.android.camera",
                "com.android.camera.Camera");
                getActivity().startActivity(intent);
                mOut.write(" ," + i);
                mOut.flush();
            }
        } catch (Exception e){
            Log.v(TAG, e.toString());
        }
            assertTrue("testSwitchMode",true);
    }
}